Claude 3.7 SonnetvsMistral Devstral Medium
Mistral Devstral Medium is cheaper than Claude 3.7 Sonnet at $0.4/M vs $3/M input tokens.
| Spec | Claude 3.7 Sonnet | Mistral Devstral Medium |
|---|---|---|
| Input price | $3/M tokens | $0.4/M tokens |
| Output price | $15/M tokens | $2/M tokens |
| Context window | 200K tokens | — |
| Free API (OpenRouter) | No | No |
| Released | Feb 2025 | Jul 2025 |
| SWE-bench Verified | 70.3% | 61.6% |
Our Verdict
Claude 3.7 Sonnet
Mistral Devstral MediumRunner-up
Not enough votes to call it. On the specs, Claude 3.7 Sonnet has the edge: bigger model tier, bigger context window, major provider backing.
Mistral Devstral Medium costs 7.5x less per token.
Too close to call
API pricing
Cost per 1M tokens
Claude 3.7 Sonnet
Input
$3.00
Output
$15.00
Mistral Devstral Medium
Input
$0.40
7.5× cheaper
Output
$2.00
7.5× cheaper
Mistral Devstral Medium is cheaper on both: 7.5× input, 7.5× output.
Writing DNA
Style Comparison
Similarity
50%
Claude 3.7 Sonnet uses 9.5x more headings
Claude 3.7 Sonnet
Mistral Devstral Medium
61%Vocabulary50%
33wSentence Length18w
0.83Hedging0.50
2.2Bold4.1
4.9Lists4.8
0.00Emoji0.00
1.78Headings0.19
0.16Transitions0.29
Based on 26 + 27 text responses
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